import {
  Card,
  Breadcrumb,
  Form,
  Button,
  Radio,
  Input,
  Upload,
  Space,
  Select,
  message
} from 'antd'
import { PlusOutlined } from '@ant-design/icons'
import { Link, useSearchParams, useNavigate } from 'react-router-dom'
import './index.scss'

import ReactQuill from 'react-quill'
import 'react-quill/dist/quill.snow.css'
import { useEffect, useState } from 'react'
import { getArticleDetailAPI, postArticleAPI, updateArticleAPI } from '@/apis/aryicle'
import { useChannel } from '@/hooks/useChannel'

const { Option } = Select

const Publish = () => {
  const navigate = useNavigate()
  const {channelList} = useChannel()
  
  // 提交表单
  const onFinish = async (formValue) => {
    // console.log(formValue)
    // 校验封面类型是否和图片列表对应
    if (imageList.length !== formValue.type) {
      return message.warning('封面类型和图片数量不匹配')
    }

    const {title, content, channel_id} = formValue
    const reqData = {
      title,
      content,
      cover: {
        type: imageType,
      // 此处只为新增时的逻辑
      // 编辑时也需要做处理
        // images: imageList.map(item => item.response.data.url)
        images: imageList.map(item => {
          if (item.response) {
            return item.response.data.url
          } else {
            return item.url
          }
        })
      },
      channel_id
    }

    // 判断是编辑还是发布
    if (articleId) {
      // 更新接口
      await updateArticleAPI({...reqData, id: articleId})
    } else {
      await postArticleAPI(reqData)
    }
    message.success('发布成功')
    // 跳转到首页
    navigate('/article')
  }

  // 上传回调
  const [imageList, setImageList] = useState([])
  const onUploadChange = (info) => {
    console.log(info);
    setImageList(info.fileList)
  }

  // 切换图片封面类型
  const [imageType, setImageType] = useState(0)
  const onTypeChange = (e) => {
    setImageType(e.target.value)
  }

  // 回填数据
  const [searchParams] = useSearchParams()
  const articleId = searchParams.get('id')
  // 获取实例
  const [form] = Form.useForm()
  useEffect(() => {
    // 1.通过id获取数据
    async function getArticleDetail() {
      const res = await getArticleDetailAPI(articleId)
      const data = res.data
      const {cover} = data
      form.setFieldsValue({
        // 回填基本数据
        ...data,
        // 回填图片类型
        type: cover.type,
      })
      // 显示图片标签
      setImageType(cover.type)
      // 显示图片 绑定图片的fileList 
      setImageList(cover.images.map(item => ({ url: item })))
    }
    // 有ID时才调用函数
    if (articleId) {
      getArticleDetail()
    }
    // 2.将数据回填到表单
  },[articleId, form])

  return (
    <div className="publish">
      <Card
        title={
          <Breadcrumb items={[
            { title: <Link to={'/'}>首页</Link> },
            { title: `${articleId ? '编辑' : '发布'}文章` },
          ]}
          />
        }
      >
        <Form
          labelCol={{ span: 4 }}
          wrapperCol={{ span: 16 }}
          initialValues={{ type: 0 }}
          onFinish={onFinish}
          form={form}
        >
          <Form.Item
            label="标题"
            name="title"
            rules={[{ required: true, message: '请输入文章标题' }]}
          >
            <Input placeholder="请输入文章标题" style={{ width: 400 }} />
          </Form.Item>
          <Form.Item
            label="频道"
            name="channel_id"
            rules={[{ required: true, message: '请选择文章频道' }]}
          >
            <Select placeholder="请选择文章频道" style={{ width: 400 }}>
              {/* value属性用户选中后自动收集起来作为接口的提交字段 */}
              {channelList.map(item => <Option key={item.id} value={item.id}>{ item.name}</Option>)} 
            </Select>
          </Form.Item>
          
          {/* 上传封面 */}
          <Form.Item label="封面">
          <Form.Item name="type">
            <Radio.Group onChange={onTypeChange}>
              <Radio value={1}>单图</Radio>
              <Radio value={3}>三图</Radio>
              <Radio value={0}>无图</Radio>
            </Radio.Group>
            </Form.Item>
            {/* 
              listType：决定选择文件框的样式
              showUploadList：是否展示文件列表
            */}
          {imageType > 0 && <Upload
            listType="picture-card"
              showUploadList
              action={'http://geek.itheima.net/v1_0/upload'}
              onChange={onUploadChange}
              name="image"
              maxCount={imageType}
              fileList={imageList}
          >
            <div style={{ marginTop: 8 }}>
              <PlusOutlined />
            </div>
          </Upload>}
          </Form.Item>

          <Form.Item
            label="内容"
            name="content"
            rules={[{ required: true, message: '请输入文章内容' }]}
          >
            {/* 富文本编辑器 */}
            <ReactQuill
            className="publish-quill"
            theme="snow"
            placeholder="请输入文章内容"
          />
          </Form.Item>

          <Form.Item wrapperCol={{ offset: 4 }}>
            <Space>
              <Button size="large" type="primary" htmlType="submit">
                发布文章
              </Button>
            </Space>
          </Form.Item>
        </Form>
      </Card>
    </div>
  )
}

export default Publish